Pollen Counts in France
Check daily pollen forecasts, the pollen map, seasonal trends, and all the cities we cover in France. Forecasts update every day, so check back regularly during pollen season.
Updated: 9 Nov 2026.
France Pollen Map
- Alder
- Birch
- Grass
- Mugwort
- Olive
- Ragweed
France's Pollen Seasons
In France, tree pollen arrives at different times. Alder trees release pollen in February and March. Birch pollen follows in April, the busiest month for pollen overall. Olive trees add pollen in May and June.
Grass pollen is the most common type across the year in France. Its season runs from May through July. This means grass pollen continues after April, when pollen from many plants is especially active overall.
Weed pollen appears later in the warm season. Mugwort releases pollen from July through September, while ragweed releases it in August and September. These overlapping months can bring pollen that affects people with allergies across France.
Pollen Calendar for France
Typical pollen calendar for France, averaged across 190 cities from previous years. Alder peaks in March, Birch peaks in April, Grass peaks in June, Mugwort peaks in July, Olive peaks in May, Ragweed peaks in August. Use it to see which months each pollen type usually rises and falls.
| Alder | Birch | Grass | Mugwort | Olive | Ragweed | |
|---|---|---|---|---|---|---|
| Jan | 9.1 | 0 | 0 | 0 | 0 | 0 |
| Feb | 106.3 | 0 | 0.3 | 0 | 0 | 0 |
| Mar | 208.9 | 197.6 | 3.8 | 0 | 0 | 0 |
| Apr | 13.5 | 708.9 | 37.6 | 0 | 2.5 | 0 |
| May | 1.2 | 65.8 | 322.6 | 0 | 16.9 | 0 |
| Jun | 0.2 | 13.7 | 780.7 | 5.7 | 8.5 | 0 |
| Jul | 0 | 0.1 | 278.5 | 59.9 | 0.1 | 0.3 |
| Aug | 0 | 0 | 73.3 | 36.7 | 0 | 37.3 |
| Sep | 0 | 0 | 8.1 | 25.1 | 0 | 27.7 |
| Oct | 0 | 0 | 1.4 | 2.8 | 0 | 0.1 |
| Nov | 0 | 0 | 0.1 | 0.1 | 0 | 0 |
| Dec | 0 | 0 | 0 | 0 | 0 | 0 |
Values in gr/m³ (pollen grains per cubic metre), averaged across covered cities. Local microclimates vary. Not medical advice.
Places We Cover in France
We publish forecasts for these cities across France. Check the list to see what is near you, or view them on the France Pollen Map above.
Auvergne-Rhône-Alpes
- Annecy
- Annecy-le-Vieux
- Bron
- Chambéry
- Chamonix
- Corrençon-en-Vercors
- Grenoble
- La Bauche
- Lépin-le-Lac
- Morzine
- Nantes-en-Ratier
- Nurieux-Volognat
- Samoëns
- Vichy
Bourgogne
Bourgogne-Franche-Comté
Brittany
Brittany Region
Centre
Centre-Val de Loire
Corsica
Grand Est
- Bar-le-Duc
- Europe Schweitzer
- Forbach
- Fresse-sur-Moselle
- Metz
- Mulhouse
- Nancy
- Obernai
- Reims
- Saint-Dizier
- Strasbourg
- Troyes
Hauts-de-France
New Aquitaine
Normandy
Nouvelle-Aquitaine
- Angoulême
- Arcachon
- Ascain
- Bayonne
- Benest
- Biarritz
- Bordeaux
- Cap Ferret
- Dax
- Hendaye
- Hourtin
- La Rochelle
- Lacanau-Océan
- Lalinde
- Les Sables
- Limoges
- Lège-Cap-Ferret
- Pau
- Pessac
- Poitiers
- Royan
- Sarlat-la-Canéda
- Urrugne
Occitanie
- Aumes
- Béziers
- Chis
- Collioure
- Font-Romeu-Odeillo-Via
- Lourdes
- Montpellier
- Montréal
- Narbonne
- Nîmes
- Perpignan
- Sète
- Sérignan-Plage
Other
Pays de la Loire
Pays de la Loire Region
Provence
Provence-Alpes-Côte d'Azur
- Aix-en-Provence
- Avignon
- Bonnieux
- Cannes
- Castellane
- Flayosc
- Gap
- Gassin
- Grasse
- Mougins
- Nice
- Saint-Jean-Cap-Ferrat
- Toulon
Rhône-Alpes
- Annemasse
- Bourdeaux
- Châtel
- Gaillard
- Monnetier
- Monnetier-Mornex
- Thollon-les-Mémises
- Vagnas
- Évian-les-Bains
Île-de-France
- Antony
- Athis-Mons
- Bourg-la-Reine
- Cachan
- Cergy
- Chessy
- Coupvray
- Croissy-Beaubourg
- Fontenay-aux-Roses
- Fresnes
- Meaux
- Neuilly-sur-Marne
- Palaiseau
- Provins
- Rambouillet
- Saint-Germain-en-Laye
- Sceaux
- Serris
- Versailles
- Viroflay
Île-de-France Region
Pollen information is for education and planning only. This is not medical advice. Consult a qualified healthcare provider about symptoms or treatment.